Answer:
49 1/2 miles per hour
Explanation:
To determine the average speed, we take the miles and divide by the hours
speed ÷ hours
24 3/4 ÷ 1/2
Change the mixed number to an improper fraction
24 3/4 = (4* 24+3)/4 =99/4
99/4 ÷ 1/2
Copy dot flip
99/4 * 2/1
99/2
Change to a mixed number
2 goes into 99 49 times (49*2 = 98) with 1 left over
49 1/2 miles per hour